Installation and operating manual
EN
16 DRYPOINT
®
AC 410 – 495 | DRYPOINT
®
AC 410 – 495 MS
2.3.2. Function of DRYPOINT
®
AC 410 – 495
PI
1
PDI
2
PI
2
9
6
4
8
8
Y1
Y2
3
11
7
7
5
5
2
2
1
1
Ko
Ro
Ro
J
O
2
2
MIAH 02
Atmosph
ä
re
Atmosphere
13
14
9
MISH 01
101
101
MT
101
PDI
1
12
Option Taupunktsteuerung
J : Feuchtluft Eintritt / Wet Air Inlet
O : Trockenluft Austritt / Dry Air Outlet
R : Regenerationsluft Austritt / Regeneration Air Outlet
Ko : Kondensat Austritt / Condensate Outlet
2.3.2.1. Adsorption
The plant is an adsorption dryer with alternating adsorption and regeneration phases.
The two adsorbers are operating alternately. While one absorber dries the medium, the other one is regenerated.
This process ensures uninterrupted operation of the adsorption dryer.
The medium to be dried enters the prefilter (3) through the wet gas inlet (J). In the prefilter, condensate, oil aerosols
and dirt particles are removed by a high-performance microfilter.
The medium is then fed through the lower shuttle valve (9) and the lower flow distributor (2) into the vessel of one
of the adsorbers (1) and then flows from the bottom to the top of one adsorber.
At the top of the adsorber, the dried medium flows through the upper flow distributor (2) and the upper shuttle valve
(9) into the afterfilter (4).
In the afterfilter, fine dust particles and any abrasion residue of the adsorbent are removed by the dust filter and the
dried and cleaned medium is fed to the dry gas outlet (O) where it enters the compressed air system.
2.3.2.2. Regeneration
The adsorbent is regenerated by means of a partial flow of the dried medium.
To start the regeneration process, the 2/2-way solenoid valve (5) at the regeneration gas outlet is opened. As a
result, the adsorber is depressurised to ambient pressure. The compressed air is released through the silencers (7)
from the system.
A partial flow of the dry medium flows from the adsorber in adsorption mode through the bypass line into the upper
piping, and from there down through the adsorber to the regenerated. At the bottom of the adsorber, the medium is
released into the atmosphere through the silencers (7).
The regeneration gas volume is limited by the orifice (6).
